Giant rock crabs are massive versions of the weaker Rock crab. They lie in wait for prey, disguised as large boulders. When approached, they attack, unless they have become tolerant, in which case they remain as "boulders" - attempting to cast a spell on them gives the message "You can't attack this NPC."
Giant rock crabs are only initially aggressive if they are approached while dormant. Once they are moving and the targeted player is out of range, they stop being aggressive and will ignore players that don't attack them. They eventually become dormant boulders again after a while if they are not attacked.
Locations[]
- In Waterbirth Island Dungeon (a partner or a pet rock required to open the door).
Strategy[]
The giant rock crab is one of few monsters in RuneScape that will retreat from battle when they become critically wounded. This can be troublesome, as they are found in a single-way combat area. This can be prevented by attacking them while their back is turned to a nearby wall, so that they move away from the player and back up into the wall. If they move too far away, the player will follow them and risk being attacked by another rock crab. There are several protruding sections of the walls in the area that can be used as safespots which are ideal as the crabs' main weakness is magic.
Drops[]
100%[]
Item Quantity Rarity GE market price Bones 1 Always 89
Runes/Talismans[]
Item Quantity Rarity GE market price Water rune 1–39 Uncommon 4–156 Earth rune 2–37 Uncommon 8–148 Air talisman 1 Rare 92 Mind talisman 1 Rare 3,875 Fire talisman 1 Rare 4,924 Cosmic talisman 1 Rare 784 Body talisman 1 Rare 1,028 Water talisman 1 Rare 171 Earth talisman 1 Rare 310
Weaponry/Armour[]
Item Quantity Rarity GE market price Steel platebody 1 Uncommon 901 Black claws 1 Uncommon 407 Black platebody 1 Uncommon 3,696 Mithril axe 1 Uncommon 75 Rock-shell gloves 1 Uncommon 489 Rock-shell boots 1 Uncommon 275 Black warhammer 1 Rare 332 Adamant longsword 1 Rare 1,644 Adamant warhammer 1 Rare 2,204
Seeds[]
Item Quantity Rarity GE market price Poison ivy seed 1 Uncommon 18 Belladonna seed 1 Uncommon 57 Guam seed 1 Uncommon 9 Marrentill seed 1 Uncommon 5 Tarromin seed 1 Uncommon 10 Harralander seed 1 Uncommon 31 Toadflax seed 1 Rare 795 Ranarr seed 1 Rare 45,466 Irit seed 1 Rare 47 Avantoe seed 1 Rare 1,675 Snapdragon seed 1 Rare 54,551 Cadantine seed 1 Rare 1,034 Lantadyme seed 1 Rare 2,358 Dwarf weed seed 1 Very rare 423 Torstol seed 1 Very rare 58,385
Herbs[]
Item Quantity Rarity GE market price Grimy guam leaf 1 Uncommon 15 Grimy marrentill 1 Uncommon 13 Grimy tarromin 1 Uncommon 132 Grimy harralander 1 Uncommon 674 Grimy ranarr weed 1 Rare 7,640 Grimy irit leaf 1 Rare 775 Grimy avantoe 1 Rare 1,814 Grimy kwuarm 1 Rare 1,165 Grimy cadantine 1 Rare 1,312 Grimy lantadyme 1 Rare 1,391 Grimy dwarf weed 1 Rare 448
Other[]
Item Quantity Rarity GE market price Coins 27; 28; 42; 70; 137 Common Not sold Raw lobster 1 Common 210 Raw bass 1 Common 457 Tinderbox 1 Common 62 Rock-shell splinter 1 Uncommon (1/64) 24,845 Rock-shell chunk 1 Uncommon (1/64) 12,280 Rock-shell shard 1 Uncommon (1/64) 21,332 Casket 1 Rare 731 Clue scroll (medium) 1 Very rare Not sold
Gem drop table
In addition to the drops above, this monster has access to the gem drop table.
Show/hide gem drop table Item Quantity Rarity GE market price Uncut sapphire 1 Rare 455 Uncut emerald 1 Rare 679 Uncut ruby 1 Rare 1,249 Nature talisman 1 Very rare 744 Uncut diamond 1 Very rare 2,627 Rune javelin 5 Very rare 875 Loop half of key 1 Very rare 10,307 Tooth half of key 1 Very rare 10,840 Rune spear 1 Very rare 11,933 Shield left half 1 Very rare 65,697 Dragon spear 1 Very rare 37,226